New York Post may be compensated and/or receive an affiliate commission if you click or buy through our links. Featured pricing is subject to change. Get to the root of your hair color problems from ...

The first rule of coloured hair care: the more you wash, the faster your colour fades. Every shampoo session strips away a little pigment, especially if you’re using harsh, sulphate-laden formulas.

Permanent hair dyes often contain PPD, a chemical vital for vibrant, lasting colour. However, experts warn of serious health risks, including severe skin reactions and, in rare cases, life-threatening ...